Blar i NTNU Open på forfatter "Gundersen, Truls"
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Design of a novel hybrid process for membrane assisted clean hydrogen production with CO2 capture through liquefaction
Kim, Donghoi; Liu, Zhongxuan; Anantharaman, Rahul; Riboldi, Luca; Odsæter, Lars Hov; Berstad, David Olsson; Peters, Thijs; Polfus, Jonathan; Malerød-Fjeld, Harald; Gundersen, Truls (Peer reviewed; Journal article, 2022)This work introduces a novel hybrid concept to produce H2 from natural gas by using the protonic membrane reformer (PMR) with liquefaction based CO2 capture system. For process intensification, recycling of the off-gas ... -
Design of Steam Cycles for Oxy-combustion Coal based Power Plants with Emphasis on Heat Integration
Soundararajan, Rengarajan; Anantharaman, Rahul; Gundersen, Truls (Journal article; Peer reviewed, 2014)The Oxy-combustion method of CO2 capture is considered to have several advantages over other methods for CO2 capture from coal based power plants. The capture process is energy intensive and hence expensive. Heat integration ... -
Development and use of exergy efficiency for complex cryogenic processes
Kim, Donghoi; Gundersen, Truls (Journal article; Peer reviewed, 2018)In this paper, exergy efficiencies, which are effective performance parameters for cryogenic processes, are categorized based on their exergy decomposition levels. However, the existing efficiencies are not standardized ... -
Economic Analysis of a Hydrogen Liquefaction Process Based on Techno-Economic and Energy Optimization
Son, Heechang; Austbø, Bjørn; Gundersen, Truls; Hwang, Jihyun; Lim, Youngsub (Peer reviewed; Journal article, 2022)Efforts to be eco-friendly are becoming essential, and hydrogen is attracting attention as an eco-friendly fuel. As the hydrogen demand increases, the interest in liquid hydrogen is increasing because it is safer and more ... -
Energy and Environmental Aspects of an FPSO for LNG Production
Revheim, Lars Petter Rein (Master thesis, 2009)The floating production unit HLNG FPSO-1 has been evaluated with respect to its energy consumption and emissions to air, and improvement potentials within the same context have been suggested. The thesis describes theory ... -
Energy Integration Opportunities in Zero Emission LNG Re-Gasification
Hjertnes, Katrine Willa (Master thesis, 2011)Due to the increasing demand for LNG, more environmental friendly regasification solutions are of interest. Aker Solutions has developed a concept for zero emission regasification of LNG, where the regasification train is ... -
Energy, economic and environmental analysis of a BOG re-liquefaction process for an LNG carrier
Hwang, Chulmin; Oh, Sungkyun; Kim, Donghoi; Gundersen, Truls; Lim, Yongsub (Peer reviewed; Journal article, 2022)Due to tighter environmental regulations, newly built liquefied natural gas (LNG) carriers are equipped with a re-liquefaction system to minimize combustion of surplus boil-off-gas (BOG). Thus, this paper comparatively ... -
Evaluation and Optimization of Processes in the Liquefied Natural Gas (LNG) Value Chain
Kim, Donghoi (Doctoral theses at NTNU;2019:63, Doctoral thesis, 2019)As a cleaner fuel and an intermediate energy source on the way to a carbon-free society, the demand for natural is expected to grow considerably. Consequently, a larger production of liquefied natural gas (LNG) is also ... -
Evaluation of different NGL-Extraction Processes in LNG Plants
Reimers, Øyvind (Master thesis, 2010)The world s energy demand is expected to rise in the future, and fossil fuels are expected to account for a major portion of this increase. Demand for natural gas is expected to rise with 40% until 2030 due to its clean ... -
Evaluation of Natural Gas Liquefaction Processes for Floating Applications Offshore
Eckhardt, Øyvind (Master thesis, 2010)A literature survey of LNG processes suitable for offshore environment has been evaluated. Thesurvey has been performed with emphasis on space requirements, complexity, efficiency and safety.Thermodynamics theory is described ... -
Exergy analysis of conventional and electrified oil and gas platforms
Panton, Luke Kollerøs (Master thesis, 2014)This paper compares the efficiencies of oil and gas producing offshore platforms, at different points in the production lifetime and for different heat and power supply options by means of energy and exergy analysis. ... -
A feasibility study of HFO refrigerants for onboard BOG liquefaction processes
Yu, Taejong; Kim, Donghoi; Gundersen, Truls; Lim, Youngsub (Peer reviewed; Journal article, 2023)As the global demand for natural gas continues to increase, the production of liquefied natural gas (LNG) and the demand for LNG carriers are also on the rise. Following the advent of LNG propulsion engines, there has been ... -
Global optimization of a hybrid waste tire and natural gas feedstock polygeneration system
Rammohan Subramanian, Avinash Shankar; Gundersen, Truls; Barton, Paul I.; Adams, Thomas A. (Peer reviewed; Journal article, 2022)The globally optimal design and operation of a process that converts a hybrid waste tire and natural gas feedstock to multiple products (such as electricity, methanol, dimethyl ether, olefins, and liquefied natural gas) ... -
Helium Extraction from LNG End Flash
Kim, Donghoi (Master thesis, 2014)Helium is an invaluable element as it is widely used in industry such as cryo-genics and welding due to its unique properties. However, helium shortage is expected in near future because of increasing demand and the anxiety ... -
Heuristic solution approach to simultaneous optimization of heat and work integration - A two-level optimization model using genetic algorithms to establish the energy target for maximum heat and work recovery
Borge, Kari Sofie Hall (Master thesis, 2017)Heat integration is of significant importance to the process industry in the efforts of reducing energy consumption and total annual costs. The heat integration problem attempts finding the optimal interconnections of ... -
Identifying optimal thermodynamic paths in work and heat exchange network synthesis
Yu, Haoshui; Fu, Chao; Vikse, Matias; He, Chang; Gundersen, Truls (Journal article; Peer reviewed, 2018)The process synthesis problem referred to as work and heat exchange networks (WHENs) is an extension of the classical heat exchanger networks problem considering only temperature and heat. In WHENs, additional properties ... -
The importance of thermodynamic insight in Work and Heat Exchange Network Design
Fu, Chao; Wang, Xiaoling; Gundersen, Truls (Peer reviewed; Journal article, 2020)Work and Heat Exchange Network (WHEN) design has been an emerging topic in the area of Process Synthesis and has attracted increasing research interest in the past few years. Not only temperature changes but also pressure ... -
Innovation in a heterogeneous CCS research centre, managerial and organizational challenges
Aasen, Tone Merethe; Mølnvik, Mona J.; Aarlien, Rune; Bredesen, Rune; Munkejord, Svend Tollak; Brunsvold, Amy; Gundersen, Truls (Journal article; Peer reviewed, 2012)Recently, the Norwegian authorities have established a number of Centres for Environment-friendly Energy Research (CEER), intended to develop new knowledge, foster breakthrough technology and promote innovation in order ... -
An Innovative Polygeneration System Integrating Compressed Air Energy Storage (CAES) and Multi-effect Desalination for Efficient LNG Cold Energy Utilization
Alirahmi, Seyed Mojtaba; Gundersen, Truls; Yu, Haoshui (Peer reviewed; Journal article, 2022)Liquefied natural gas (LNG) contains a huge amount of cold energy, generally wasted during the regasification process. With the increasing penetration of renewable energy in the grid, the power generation profile does not ... -
Integration of LNG Regasification and Air Separation Units
Giametta, Roxane Edith Helene (Master thesis, 2017)Through the various LNG cold recovery applications, cryogenic air separation is the only one recovering the coldest range of exergy, which is also the most valuable. Several designs of integrated ASU and LNG regasification ...